CN202406035U - Welding current generating apparatus - Google Patents
Welding current generating apparatus Download PDFInfo
- Publication number
- CN202406035U CN202406035U CN2011203362307U CN201120336230U CN202406035U CN 202406035 U CN202406035 U CN 202406035U CN 2011203362307 U CN2011203362307 U CN 2011203362307U CN 201120336230 U CN201120336230 U CN 201120336230U CN 202406035 U CN202406035 U CN 202406035U
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- Prior art keywords
- welding current
- controller
- contactor
- transformer
- silicon
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Abstract
The utility model discloses a welding current generating apparatus, comprising a transformer, an input apparatus, a silicon controlled rectifier pressure regulator, a controller and a plurality of contactors. According to the welding current generating apparatus provided in the utility model, the primary-secondary turn ratio of the transformer is changed by the contactor, the transformer secondary voltage is determined preliminarily, then the conduction angle of the silicon controlled rectifier in the silicon controlled rectifier pressure regulator is regulated to adjust the transformer primary voltage, the fine tuning of the transformer secondary voltage is realized, thereby stepless regulation of the transformer on the welding current is guaranteed, and accurate welding current can be respectively provided for band saw strips of different specifications. In addition, the on/off of the welding current is realized by controlling the conduction/non-conduction of the silicon controlled rectifier, compared to the method of controlling the on/off of the welding current by the contact of the contactor, the reaction time for the on/off control is shorter, the operation is more accurate, and the problem of unstable work of a band saw strip butt welder caused by work contact burning loss or oxidation of the contactor is avoided.
Description
Technical field
The utility model belongs to bands for band butt welding machine technical field, relates in particular to a kind of welding current generation device that is used for the bands for band butt welding machine.
Background technology
The bands for band of producing on the bands for band production line generally reaches 100 meters to hundreds of rice, can not directly supply band sawing machine to use, and must cut apart it, by the bands for band butt welding machine bands for band after cutting apart is welded afterwards.
In the process of bands for band butt welding machine welding bands for band; Welding work pieces (being two terminations of bands for band to be welded) relative motion under the effect of drive unit; After two terminations are in contact with one another, in bands for band,, utilize electric current to flow through the principle that conductor can generate heat through a certain amount of electric current; Two end face temperature of bands for band to be welded are raise, accomplish welding.
In welding process, the specification of bands for band is different, and its required welding current is also different.For example: if welding current is excessive, can solder side that treat saw blade be burnt, if welding current is too small, the temperature of bands for band solder side can be low excessively, on the bands for band solder side, is difficult to form the liquid-metal layer that continues fusing, finally also can't guarantee welding quality.In addition, in welding process latter stage, need to turn-off earlier the source of welding current, then welding work pieces continues relative motion one segment distance, forms an extrusion process, its objective is that to make solder side substantial, full more.Therefore, in order to guarantee welding quality, in welding process, to the accurate electric current with its specification coupling be provided, accurate cut-off current when welding need be turn-offed welding current latter stage to the saw blade of treating to be welded.
At present; Welding current generation device in the bands for band butt welding machine is as shown in Figure 1; The two ends of transformer secondary winding are connected with a bands for band to be welded respectively, and the former limit of transformer winding is provided with tap in a plurality of minutes and a terminal tap, each divide tap respectively with a contactor in an end of contact be connected; The other end of the contact in a plurality of contactors is connected with an end of power supply simultaneously, and the terminal tap of the former limit of transformer winding is connected with the other end of power supply.Before bands for band is welded, control a conducting in a plurality of contactors, thereby change transformer just-secondary turn ratio, and then control secondary voltage, adjustment flow through the welding current of welding work pieces.
But; There is following defective in existing welding current generation device: only realize Current Regulation through a plurality of contactors; This adjustment process is to have level to regulate; And the specification of bands for band is diversified, and therefore existing welding current generation device can not provide accurate welding current respectively to the bands for band of all size; Realize the shutoff of welding current through contactor; Because the action of contactor has hysteresis quality; So the turn-off time of welding current is accurate inadequately, and the operating current of contactor is bigger, long-term high-frequency charged disconnection; Cause the easy scaling loss in contact or the oxidation of contactor, cause the job insecurity of bands for band butt welding machine.
The utility model content
In view of this; The purpose of the utility model is to provide a kind of welding current generation device, is applied to the bands for band butt welding machine, can carry out step-less adjustment to welding current; Bands for band to various sizes provides accurate welding current respectively; And no longer realize the shutoff of welding current through contactor, thereby it is accurate inadequately to solve the welding current turn-off time that exists in the prior art, contacts of contactor is prone to burn or oxidation and the problem of the bands for band butt welding machine job insecurity that causes.
For realizing above-mentioned purpose, the utility model provides following technical scheme:
A kind of welding current generation device comprises transformer, a plurality of contactor, also comprises input unit, silicon-controlled voltage regulation device and controller;
Said input unit is connected with the input interface of said controller, be used to receive user's input bands for band specification information and actual condition information and export the said controller that is attached thereto to;
Two inputs of said silicon-controlled voltage regulation device are connected with AC power, and control end is connected with the simulation output interface of said controller;
The former limit winding of said transformer is provided with tap in a plurality of minutes and a terminal tap, and an end of the contact in each tap in said minute and the said contactor is connected, and said terminal tap is connected with first output of said silicon-controlled voltage regulation device;
The main coil of said a plurality of contactors is connected with the output interface of said controller respectively, and the other end of the contact in said a plurality of contactor is connected to second output of said silicon-controlled voltage regulation device simultaneously;
The specification information of the bands for band that said controller is imported according to connected input unit generate the on off operating mode of the contact in the said a plurality of contactors of adjustment control signal, transfer to the main coil of said a plurality of contactors, and according to the actual condition information that connected input unit is imported generate the thyristor operating angle in the said silicon-controlled voltage regulation device of adjustment control signal, transfer to the control end of said silicon-controlled voltage regulation device.
Preferably, in above-mentioned welding current generation device, said input unit is host computer or touch-screen.
Preferably, in above-mentioned welding current generation device, said controller is programmable logic controller (PLC) (PLC).
This shows; The beneficial effect of the utility model is: in the disclosed welding current generation device of the utility model; Change the first-number of secondary turns ratio of transformer through contactor; The preliminary size of confirming transformer-secondary voltage through changing the primary voltage of silicon controlled angle of flow adjustment transformer in the silicon-controlled voltage regulation device, realizes the fine tuning to transformer-secondary voltage afterwards; Thereby guarantee that transformer carries out step-less adjustment to welding current, can accurate welding current be provided respectively to the bands for band of different size.In addition; Whether the shutoff of welding current realizes through the conducting of control silicon controlled; Realize that with the contact through contactor the shutoff of welding current compares; The reaction time of its shutoff is shorter, it is more accurate to turn-off operation, and avoided being prone to scaling loss or oxidation and the problem of the bands for band butt welding machine job insecurity that causes by contacts of contactor.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of existing welding current generation device;
Fig. 2 is the structural representation of the disclosed a kind of welding current generation device of the utility model.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer; To combine the accompanying drawing among the utility model embodiment below; Technical scheme among the utility model embodiment is carried out clear, intactly description; Obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model discloses a kind of welding current generation device; Be applied to the bands for band butt welding machine; Can carry out step-less adjustment to welding current, accurate welding current is provided respectively, and no longer realize the shutoff of welding current through contactor to the bands for band of various sizes; Thereby the welding current turn-off time that exists in the solution prior art is accurate inadequately, and contacts of contactor is prone to burn or oxidation and the problem of the bands for band butt welding machine job insecurity that causes.
Referring to Fig. 2, Fig. 2 is the structural representation of the disclosed a kind of welding current generation device of the utility model.Comprise: transformer 21, silicon-controlled voltage regulation device 22, controller 23, input unit 24 and contactor KM1, KM2, KM3 and KM4.
Wherein, silicon-controlled voltage regulation device 22 comprises a control end, two inputs and two outputs.
The two ends of the secondary winding of transformer 21 are connected to a bands for band to be welded 25 respectively; Former limit winding is provided with tap in a plurality of minutes and a terminal tap; Terminal tap is connected with first output of silicon-controlled voltage regulation device 22; Each divides an end of the contact in tap and the contactor to be connected, and the other end of the contact in a plurality of contactors (end that promptly is not connected with minute tap) while is connected with second output of silicon-controlled voltage regulation device 22.Concrete, an end of contact is connected to branch tap 211 among the contactor KM1, and the other end is connected to second output of silicon-controlled voltage regulation device 22; An end of contact is connected to branch tap 212 among the contactor KM2, and the other end is connected to second output of silicon-controlled voltage regulation device 22; An end of contact is connected to branch tap 213 among the contactor KM3, and the other end is connected to second output of silicon-controlled voltage regulation device 22; An end of contact is connected to branch tap 214 among the contactor KM4, and the other end is connected to second output of silicon-controlled voltage regulation device 22.
The simulation output interface of controller 23 is connected with the control end of silicon-controlled voltage regulation device 22; The output interface of controller 23 is connected with the main coil of contactor KM1, KM2, KM3 and KM4, and controller 23 can receive specification information and the actual condition information of user through the bands for band of input unit 24 inputs simultaneously.
The main coil of a plurality of contactors changes the on off operating mode of contact separately after receiving the control signal of controller 23 outputs under the effect of control signal, confirm first-secondary turn ratio in the transformer 21, tentatively confirms the size of transformer 21 secondary voltages.After silicon-controlled voltage regulation device 22 receives the analog quantity control signal of controller 23 outputs; Amplitude adjustment self angle of flow according to control signal; The primary voltage of adjustment transformer 21; Realization is to the fine tuning of secondary voltage, thereby guaranteed that transformer 21 can carry out step-less adjustment to welding current according to the specification and the actual condition of bands for band.In addition; Whether the shutoff of welding current realizes through the conducting of control silicon controlled; Realize that with the contact through contactor the shutoff of welding current compares; The reaction time of its shutoff is shorter, it is more accurate to turn-off operation, and need not the charged disconnection in contact of contactor, avoided being prone to scaling loss or oxidation and the problem of the bands for band butt welding machine job insecurity that causes by contacts of contactor.
In sum; In the disclosed welding current generation device of the utility model,, tentatively confirm the size of transformer-secondary voltage through first-number of secondary turns ratio of contactor change transformer; Afterwards through changing the primary voltage of silicon controlled angle of flow adjustment transformer in the silicon-controlled voltage regulation device; Realization is to the fine tuning of secondary voltage, thereby the assurance transformer carries out step-less adjustment to welding current, can accurate welding current be provided respectively to the bands for band of different size.In addition; Whether the shutoff of welding current realizes through the conducting of control silicon controlled; Realize that with the contact through contactor the shutoff of welding current compares; The reaction time of its shutoff is shorter, it is more accurate to turn-off operation, and avoided being prone to scaling loss or oxidation and the problem of the bands for band butt welding machine job insecurity that causes by contacts of contactor.
In force, input unit 24 can be host computer, also can be touch-screen.Touch-screen is a personal-machine interactive interface, and the user can be through the specification information and the actual condition information of touch-screen input tape saw blade.
Above-mentioned controller 23 can be made up of single-chip microcomputer, digital to analog converter and relay.Input unit is connected with single-chip microcomputer, exports the specification information and the actual condition information of the bands for band of user input to single-chip microcomputer; Single-chip microcomputer generates the control information of regulating the on off operating mode of contact among contactor KM1, KM2, KM3 and the KM4 according to the specification information of the bands for band that receives; Because the operating current of contactor is bigger; Between single-chip microcomputer and each contactor KM1, KM2, KM3 and KM4, a relay is set respectively; Single-chip microcomputer exports control information to relay, regulates the on off operating mode of contact in the contactor through the operating state that changes relay; Single-chip microcomputer generates the control information of regulating thyristor operating angle in the silicon-controlled voltage regulation device 22 according to the actual condition information that receives; This control information is converted into the analog signals of 0～10 volt or 0～20 milliampere through digital to analog converter; And export the control end of silicon-controlled voltage regulation device 22, the adjustment silicon controlled angle of flow to.
In the enforcement; Controller 23 can also adopt programmable logic controller (PLC) PLC; Because PLC can directly drive contactor; So need not to be provided with in addition again relay, and integrated digital to analog converter among the PLC, therefore when controller 23 is selected PLC for use, can simplify the structure of welding current generation device.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (3)
1. a welding current generation device comprises transformer and a plurality of contactor, it is characterized in that, also comprises input unit, silicon-controlled voltage regulation device and controller;
Said input unit is connected with the input interface of said controller, be used to receive user's input bands for band specification information and actual condition information and export the said controller that is attached thereto to;
Two inputs of said silicon-controlled voltage regulation device are connected with AC power, and control end is connected with the simulation output interface of said controller;
The former limit winding of said transformer is provided with tap in a plurality of minutes and a terminal tap, and an end of the contact in each tap in said minute and the said contactor is connected, and said terminal tap is connected with first output of said silicon-controlled voltage regulation device;
The main coil of said a plurality of contactors is connected with the output interface of said controller respectively, and the other end of the contact in said a plurality of contactor is connected to second output of said silicon-controlled voltage regulation device simultaneously;
The specification information of the bands for band that said controller is imported according to connected input unit generate the on off operating mode of the contact in the said a plurality of contactors of adjustment control signal, transfer to the main coil of said a plurality of contactors, and according to the actual condition information that connected input unit is imported generate the thyristor operating angle in the said silicon-controlled voltage regulation device of adjustment control signal, transfer to the control end of said silicon-controlled voltage regulation device.
2. welding current generation device according to claim 1 is characterized in that, said input unit is host computer or touch-screen.
3. welding current generation device according to claim 1 and 2 is characterized in that, said controller is programmable logic controller (PLC) PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203362307U CN202406035U (en) | 2011-09-08 | 2011-09-08 | Welding current generating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203362307U CN202406035U (en) | 2011-09-08 | 2011-09-08 | Welding current generating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202406035U true CN202406035U (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203362307U Expired - Fee Related CN202406035U (en) | 2011-09-08 | 2011-09-08 | Welding current generating apparatus |
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| Country | Link |
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| CN (1) | CN202406035U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510856A (en) * | 2015-12-07 | 2016-04-20 | 无锡市计量检定测试中心 | Conduction angle calibration circuit for precision welding current measurement instrument |
-
2011
- 2011-09-08 CN CN2011203362307U patent/CN202406035U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510856A (en) * | 2015-12-07 | 2016-04-20 | 无锡市计量检定测试中心 | Conduction angle calibration circuit for precision welding current measurement instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20170908 |